FOV converter: horizontal, vertical and aspect ratio

Horizontal FOV is how wide your view is from left to right, vertical FOV is top to bottom. Games label their slider differently: some use horizontal, some vertical, and some measure horizontal FOV as if your screen were 4:3.

Almost every modern shooter uses Hor+ scaling: the vertical FOV stays the same and a wider screen shows more at the sides. That's why the converter turns everything into vertical FOV first, then works out the horizontal FOV for each screen.

In most shooters, not your hip-fire turn speed: cm/360 depends on DPI and in-game sensitivity. A wider FOV makes the same movement look slower on screen, which is why some players feel a difference. To keep the same turn speed across games, use the sensitivity converter or the eDPI calculator.